Although a thief only writes a request to a victim when a nsurplus of work is visible, sometimes this request might yield a failed steal. When the victim polls the request, it is possible that its work pool shared region no longer has a surplus of
work (e.g. it was consumed or locally stolen). To avoid this situation and further reduce the number of failed steals, in MaCS, the victim tries to fulfil that request by performing a reservation of work from some other local worker which has a surplus of work and writes that work back to the thief.